13th birthday decorations girls
Worth a lookShows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Review moat
Great328.6avg incumbent reviews — the moat a new listing must climb
Brand share
Great55%top-5 brand share — no brand owns this niche
Competition
Great38%top-5 click share — an open shelf
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay£271K£271K/yr · 546K searches
Growth
Bad-4.9%90-day search growth — must beat 0% to launch
Avg price
Bad£7.65avg listing price — sweet spot $15–$100
Price range
Bad£2.56–£16.96cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, 13th birthday decorations girls is a £271K/yr Amazon United Kingdom market (546K searches/yr). The top 5 brands hold 55% of demand. Demand peaks in Jan. Verdict: Worth a look — 59/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
13th birthday decorations girls market data
- Units sold / yr
- 30K–40K
- avg 250–500/product
- Revenue / yr
- £230K–£306K
- units × avg price
- Conversion rate
- 6.5%
- Avg BSR
- #390
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 89%
- Out of stock
- 7.2%
- Avg brand age
- 22 months
- Avg seller age
- 174 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
40 falling
Sellers
67
Top-5 brand share
55%
Top 20: 83%
Top-5 click share
38%
Top 20: 70%
Open market
42%
- YTEWFGL24%
- Sheinly12%
- OakTree7%
- Beainfir6%
- Tyqour5%
- Yiiyyuuko3%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -4.9% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.9×
Top 13th birthday decorations girls search terms
- 13th birthday decorations231K/yr
- 13th birthday58K/yr
- 13 birthday decorations40K/yr
- 13th birthday banner34K/yr
- 13th birthday decorations boy29K/yr
- teenager birthday decorations24K/yr
- 13th birthday decorations girls19K/yr
- 13 birthday12K/yr
- happy 13th birthday banners10K/yr
- 13 birthday banner10K/yr
Top 13th birthday decorations girls products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
13th Birthday Decorations Girls Set - 25 Pcs Rose Gold Official Teenager Banner Bunting Hanging Swirls Streamers Number 13 Balloon 59*39 Inch Backdrop Confetti Latex Balloons for 13th Party Supplies
YTEWFGL£11.764.6★128 rev
13th Birthday Decorations Blue Banner - 20 Pcs Official Teenager Banner Happy Birthday Backdrop Number 13 Foil Balloon Hanging Swirls Silver Latex Balloons for Boys Party Supplies
YTEWFGL£11.724.6★128 rev
Beainfir 13th Birthday Decorations Set Include Rose Gold Happy 13th Birthday Banner Triangle Flag Banner Confetti Latex Balloons and Foil Balloons for Party Decoration Supplies for Girls and Boys
Beainfir£4.874.4★1,406 rev
Girls 13th Birthday Decorations Black Rose Gold Official Teenager Decorations 16 Pack Girls Happy 13th Birthday Banner Bunting Kit by Sheinly
Sheinly£6.964.4★287 rev
Tyqour Glitter 13th Birthday Cake Topper - Official Teenager Party Decorations Supplies in Black
Tyqour£3.134.6★112 rev
Newest
by launch date
13th Birthday Decorations - Rose Gold 13 Birthday Decorations Include Banner Fringe Curtains Latex Balloons Crown Sash Cake Topper & Number Balloon for BD Party Decor
FUNTE£12.1021 rev
13th Birthday Decorations Boy Girls Bruh IM 13 Backdrop Happy 13th Birthday Banner Tablecloth 13th Birthday Balloons Teenager Birthday Decorations Hanging Swirls Balloon Arch Kit Party Supplies
Fuwane£12.0712 rev
13th Birthday Decorations Boys Banner - 41 Pcs Black Official Teenager Banners Number 13 Foil Balloon Hanging Swirls Latex Balloons and Cake Toppers for Boy 13 Years Old Party Supplies
SEWIRUY£9.407 rev
13th Birthday Decorations Party Supplies - 9 Pcs Black Gold Happy Birthday Banners Official Teenager Backdrop Glitter Star Hanging Streamers for Boys and Gilrs Teenager 13 Years Old Party Decoration
Yiiyyuuko£10.5729 rev
Happy 13th Birthday Banner Flashing Black Banners for Boys and Girls 13th Birthday Decorations (Age13)
Ethlomoer£4.1687 rev
Trending
90-day click momentum13th Birthday Decorations - Rose Gold 13 Birthday Decorations Include Banner Fringe Curtains Latex Balloons Crown Sash Cake Topper & Number Balloon for BD Party Decor
FUNTE£12.104.3★
13th Birthday Decorations Boy Set - 44 Pcs Black Silver Official Teenager Decorations Including Banner Backdrop Number 13 Balloon Hanging Swirls and Latex Balloons for 13 Years Old Party Supplies
YTEWFGL£11.394.0★
13th Birthday Decorations Boys Banner - 41 Pcs Black Official Teenager Banners Number 13 Foil Balloon Hanging Swirls Latex Balloons and Cake Toppers for Boy 13 Years Old Party Supplies
SEWIRUY£9.405.0★
Boys 13th Birthday Decorations Blue Silver 13th Birthday Party Decorations 16 Pack Navy Silver Boy Banner Bunting Kit by Sheinly
Sheinly£6.494.4★
13th Birthday Banner 13th Birthday Decorations Official Teenager Decorations Banner for Boys and Girls Happy 13/Level 13 Unlocked/Cheers to 13 Years Funny 13 Party Supplies
Hstascoz£4.854.4★
What buyers say about 13th birthday decorations girls
What buyers praise and complain about, mined from review topics.What buyers love
“Great variety”
“Good value”
“Birthday Gift”
“As described”
“Love this assortment & great colours”
“Easy to use”
“Classy”
“Everything looks really lovely in use”
“We Love it easy easy to assemble”
“Nice candles”
What buyers complain about
“Poor quality”
“Both the number balloons had numerous holes in so wouldnt inflate, very disappointed”
“expensive”
“was darker than picture”
“Banners are terrible they are made from a material making it difficult to stick them up waste of money dont bother”
“the happy 13th birthday letter banner was not as nice as it looks in the picture”
“Was quite fiddly to put together”
“Worth saying that the latex balloons are also a little on the small side at 10in”
Top return reasons
Common questions
- Is 13th birthday decorations girls profitable to sell on Amazon United Kingdom?
- The niche generates £271K/yr across 53 tracked products. 0 of 19 products launched in the last 360 days are still selling. 90-day search growth is -4.9%. Flapen's verdict: Worth a look (59/100).
- How competitive is the 13th birthday decorations girls niche?
- 40 brands and 67 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 55% of demand.
- What do buyers complain about in 13th birthday decorations girls?
- Top complaints mined from reviews: Quality-Overall, Inflation/Deflation, Value For Money. The return rate is 0.5%.
- When does demand for 13th birthday decorations girls peak?
- Demand peaks in Jan; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 13th birthday decorations girls niche?
- Listings span £2.56–£16.96; the average listing price is £7.65 (sweet spot $15–$100). The average incumbent carries 329 reviews — the moat a new listing must climb.